Top Ruby on Rails Developers Team

Your Top Ruby on Rails
Developers Team

More than 230 business and tech leaders have built their RoR apps with our teams since 2005


With development expertise gained on over 150 international software projects

our developers and teams enable CEOs, CTOs, VPs of Engineering and Product Owners in startups and SMEs to design and craft quality software solutions. In doing so, we either augment clients’ in-house teams or deliver complete turnkey projects.


Craft an end-to-end application with a complete cross-functional team


Augment your in-house team with developers for expertise, greater capacity and speed

Mentoring &

Boost your developers’ skills with mentoring & workshops delivered by our experts

Northpass (formerly SchoolKeep Inc.) is a US-based company which provides a cloud-based LMS used by enterprise clients to manage online courses and optimize their training operations.
Steve Cornwell

Selleo has proved to be a professional and competent web and mobile software development team, they were apt at understanding our wishes and extremely service minded. I highly endorse whole Selleo team.

Steve Cornwell
CEO, Northpass, USA
Building competitive advantage through online training
Learning Management Platform
Building competitive advantage through online training
Northpass - a SaaS learning management platform - enables the creation and distribution of learning content. The system provides digital infrastructure for training operations and supports the delivery of branded training experiences. Leading companies such as Airbnb, Uber and Shopify use Northpass to streamline their human resource development processes.

Client satisfaction

surveys reveal the average score for product and service quality in the last two years have been 85% and 90.2% respectively. We keep working to go beyond that.

I look for 5 key things in a software development partner: great programmers, consistent quality, excellent value, a responsive management team, and a fun experience. Selleo is a solid 5 out of 5 by my standards.

Myron WeberMyron WeberCEO at Northwood Advisors


Years in business


Designers & developers


Software projects

Hire experienced Ruby on Rails developers

Błażej Kosmowski

Lead Developer

  • The author of over 17 technical articles related to Ruby On Rails development
  • Conducted over 50 workshops and presentations for both internal staff and outside of the company
  • Created the Selleo/pattern gem: A collection of lightweight, standardized, rails-oriented patterns
Szymon Kieloch

Lead Developer

  • The architect of business process management application used by Fortune 500 companies
  • Augmented development of apps which were featured in Mashable, Forbs, TechCrunch, BusinessInsider
  • Maintained and governed RoR security app with 40+ mln users and optimized the SaaS platform functionalities speeding them up 3000 times.
Ireneusz Skrobiś

Lead Developer

  • The Team Leader of several cloud-based and SaaS services, delivered for clients from 7 countries in Europe and America
  • Managed an augmented a team that developed web application which raised almost 2 mln USD in funding
  • A speaker and a mentor sharing Ruby on Rails best practices and helping developers boost their coding skills

Looking for experienced Ruby on Rails developers?

Let's get in touch!